The Laurin & Klement B (also known as the 8/9 HP) was the successor of the first automobile of Laurin & Klement, the type A. It was introduced in 1906 as a 2-seater Voiturette.

The water-cooled, alternately controlled four-stroke engine had a displacement of 1399cm ³ and a power output of 9 bhp (6.6 kW). This accelerated the 500-600 kg heavy vehicle up to 45 km/h. Power was transferred through a transmission and a drive shaftto the rear wheels. The frame of the car consisted of riveted steel U-profile beams.

About 250 vehicles were produced between 1906 and 1908.

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